<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="utf-8">
    <meta content="width=device-width, initial-scale=1" name="viewport">
    <title>玉灵 QQ:7031633 Email:webrx@126.com</title>
    <style>
        .box {
            width: 200px;
            height: 200px;
            background-color: #ffff00;
        }
    </style>
</head>

<body>
<script>
    function aa(event) {
        console.log(event.keyCode)
        event.stopPropagation()
    }
</script>
<div class="box" onclick="alert('ok-box')">
    <button onclick="aa(eee)">btn
    </button>
</div>

</body>
</html>
